IEC 60118-13:2016

IEC 60118-13 ®
Edition 4.0 2016-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electroacoustics – Hearing aids –
Part 13: Electromagnetic compatibility (EMC)

Électroacoustique – Appareils de correction auditive –
Partie 13: Compatibilité électromagnétique (CEM)

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IEC 60118-13 ®
Edition 4.0 2016-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electroacoustics – Hearing aids –

Part 13: Electromagnetic compatibility (EMC)

Électroacoustique – Appareils de correction auditive –

Partie 13: Compatibilité électromagnétique (CEM)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.50; 33.100.20 ISBN 978-2-8322-3098-5

– 2 – IEC 60118-13:2016 © IEC 2016

CONTENTS
FOREWORD . 4

INTRODUCTION . 6

1 Scope . 7

2 Normative references . 7

3 Terms and definitions . 8

4 Operation and function of the hearing aid . 10

5 Specification of EMC environment . 10
6 Requirements for electromagnetic emissions . 10
6.1 Requirements for radiated emissions . 10
6.2 Limits of radiated emissions . 10
6.3 Procedure for radiated emissions . 10
7 Requirements for electromagnetic immunity . 10
7.1 General . 10
7.2 Compliance criteria . 10
7.3 Radiated RF electromagnetic fields . 11
7.3.1 General . 11
7.3.2 Requirements . 11
7.3.3 Procedure . 13
7.4 Electrostatic Discharge (ESD) . 13
7.4.1 Requirements . 13
7.4.2 Procedure . 13
7.5 Power frequency magnetic fields . 13
7.5.1 Requirements . 13
7.5.2 Procedure . 13
8 Test procedures for immunity to radiated RF electromagnetic fields . 13
8.1 General . 13
8.2 Test equipment and RF signal. 13
8.3 Hearing aid test setting . 13
8.4 Determination of gain . 14
8.5 Hearing aid output coupling during immunity test . 14
8.6 Position of the hearing aid during immunity test . 15

8.7 Measurement of the input related ambient noise (IRAN) . 17
8.8 Measurement of the output related interference level (ORIL) . 17
8.9 Calculation of the input related interference level (IRIL) . 18
8.10 Report . 18
9 Measurement uncertainty for immunity to radiated RF electromagnetic fields . 18
Annex A (informative) Background for establishing test methods, performance criteria
and test levels . 19
A.1 General . 19
A.2 Radiated RF electromagnetic fields, history of the test method . 19
A.3 Performance criteria . 21
A.4 Test field strengths – Bystander compatibility . 21
A.5 Field strengths – User compatibility . 21
Annex B (informative) Rationale for particular clauses and subclauses . 24
B.1 Rationale for Clause 6 Requirements for electromagnetic emissions . 24

B.2 Rationale for 6.1 Radiated emissions . 24

B.3 Rationale for Clause 6 Requirements for RF emissions and Clause 7

Requirements for electromagnetic immunity . 24

B.4 Rationale for 7.2 Compliance criteria . 24

B.5 Rationale for 7.3 Radiated RF electromagnetic fields . 24

B.6 Rationale for 7.4 Electrostatic discharge (ESD) . 24

B.7 Rationale for 7.5 Power frequency magnetic fields . 25

Bibliography . 26

Figure 1 – Examples of input-output response curves at 1 000 Hz and the
determination of gain at an input level of 55 dB . 14
Figure 2 – Example of a test arrangement for hearing aid immunity measurements
using a GTEM cell . 15
Figure 3 – Positioning of BTE, during RF exposure . 16
Figure 4 – Positioning of BTE with receiver, during RF exposure . 16
Figure 5 – Positioning of ITE with receiver, during RF exposure . 17
Figure A.1 – Ratio of 1:2 between field strength and interference level in dB . 20
Figure A.2 – Example of test arrangement for hearing aid immunity measurements
using dipole antenna . 22

Table 1 – Field strengths of RF test signals to be used to establish immunity for
bystander compatible and user compatible hearing aids . 12

– 4 – IEC 60118-13:2016 © IEC 2016

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
ELECTROACOUSTICS – HEARING AIDS –

Part 13: Electromagnetic compatibility (EMC)

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operat
...